Life in Baihapura, an ideal city-state, depends on the rating indicator, which is controlled by an artificial intelligence system. Zero crime rate. Potentially dangerous elements whose rating has dropped below a certain level are isolated from society and moved behind the wall without the possibility of return. Professor Afa Asuri, the creator of the system, receives worldwide recognition and the Nobel Prize. Suddenly, his personal rating begins to fall rapidly, risking dropping to that very border. He believes that this is just a program glitch.